When human ancestors switched from swinging through trees to walking on two legs, they might get encouragement from an extraordinary source: ancient supernovae.
This mighty starburst can shower the earth with enough energy to move the planet’s climate into electrons to bathe and create strong, stormy, according to a new hypothesis.
Then lightning can trigger a forest fire that burns the African landscape. Because savannas have replaced forest habitat, early humans living there may have been urged to walk on two legs, as new research shows.
But still not jumping to conclusions. Many factors can contribute to the development of a two-node process that began millions of years before this star explosion, said an expert in life sciences.
Instructions for ancient supernovas were found on traces of iron-60 in the earth’s crust. These radioactive isotopes or iron versions come from stars that are nearing the end of their lives. He is said to have arrived on Earth millions of years ago after a supernova explosion in our space, write scientists in a new study.
Initial investigations illustrate traces of iron-60 which was held on Earth by exploding stars around 8 million years ago. The activity of this explosion reached the peak of a supernova (or a series of supernovas) that occurred about 123 light years from Earth around 2.6 million years ago, say scientists. At this time, in the early Pleistocene, East African forests began to retreat to open grasslands.
High-energy emissions from supernovae have been strong enough to penetrate into the troposphere, ionize the Earth’s atmosphere and affect the weather on the planet, said study lead author Adrian Mello, professor emeritus at the Faculty of Physics and Astronomy at the University of Kansas. Science.
Researchers have calculated that infusion of energy from supernovae can increase atmospheric ionization by a factor of 50. This will greatly increase the possibility of lightning from clouds to land, which in turn can cause further fires, Melotte said.
While scientists have not been able to accurately calculate how many additional lightning events will result in a 50-fold increase in ionization, “the potential for a strong increase,” he wrote in the study.
At present, most fires are caused by human actions. before “lightning is the biggest cause of fire,” explained Melot. Forests that are burned by forest fires will pave the way for pastures; a more open savanna means more walking from wood to wood, placing human relatives under the pressure of evolution to spend more time on two legs.
However, homininite has become a vertical pedestrian long before supernova activity William Harcourt-Smith, assistant professor of paleoanthropology at Lehman College at City University of New York.
The first evidence of bipedalism in the elderly was around seven million years ago and the transition began at around 4.4 million years ago, said Harcourt-Smith, who was not involved in the study.
“3.6 million years ago, we experienced two bones like Lucy, and 1.6 million years ago [we had] mandatory bipols that were very similar to us,” he explained.
Energy-saving innovations, free your hands, and provide further visibility to enemies or resources. Being honest is of course about “opening grassland habitats and adapting to such environments,” Harcourt-Smith said. However, this study does not provide convincing geological evidence for forest fires as a reason for dramatic changes in Africa’s old habitat, he said.
In addition, this destructive power and the hypothetical rate of fire that is devastating depends largely on increasing lightning due to supernovae, the variables written by the researchers “cannot be assessed,” he wrote in the study.